Eight players from both the 16s and 18s singles draws booked their ticket to the quarterfinals on day six at the USTA Boys’ 18 & 16 National Championships in Kalamazoo on Wednesday. In the 18s singles draw, No. 1 Frances Tiafoe (College Park, Md.), No 2. Taylor Fritz (Rancho Santa Fe, Calif.), No. 3 Stefan Kozlov (Pembroke Pines, Fla.), and No. 4 Tommy Paul (Coconut Creek, Calif.) all won their round of 16 matches in straight sets. No. 5 Michael Mmoh (Bradenton, Fla.) and No. 6 Reilly Opelka (Palm Coast, Fla.) both advanced, but needed three sets to do so. Mmoh dropped the first set to reigning 16s champion and No. 20 seed John McNally (Cincinnati, Ohio) 4-6, but won both the second and the third sets by the same score, 6-4, to clinch the match. Opelka, on the other hand, won the first set 6-4, but dropped set two 3-6 to No. 30 Nathan Perrone (Bluffton, S.C.). Opelka, the 2015 Wimbledon juniors champion, won the decisive third set 6-3. No. 7 seed Alex Rybakov (Coral Springs, Fla.) and No. 12 Eduardo Nava (Woodland Hills, Calif.) round out the other quarterfinalists in the 18s singles draw. In the 16s singles draw, seven of the eight quarterfinalists advanced to the final eight with straight set victories. These include No. 1 Jeffrey Wolf (Cincinnati, Ohio), No. 3 Patrick Kypson (Greenville, N.C.), No. 4 Alexandre Rotsaert (Boca Raton, Fla.), No. 5 Sean Sculley (Hilton Head Island, S.C.), No. 8 Kyrylo Tsygura (North Potomac, Md.), No. 15 William Howells (Boca Raton, Fla.), and No. 25 Trent Bryde (Suwanee, Ga.). No. 16 Jason Lui (Bellevue, Wash.) needed three sets to overcome the challenge of Kennan Mayo (Roseville, Calif.) – the unseeded player who knocked out No. 2 Jake Van Emburgh yesterday. In the 18s doubles draw, No. 2 Fritz and Opelka remain the highest seed in the tournament with their 6-3, 6-0 quarterfinal victory over No. 15 Gianni Ross (La Grange, Ill.) and Martin Joyce (Hinsdale, Ill.). The victors will face No. 7 Brandon Holt (Rolling Hills, Calif.) and Riley Smith (Long Beach, Calif.) in the semifinals. The 16s doubles quarterfinals matches will be played tomorrow along with the top half of the bracket in both singles draws. Fourth round feedins for both 16s and 18s will begin in the morning.

Source: Mitch Blankespoor